diff --git a/include/utils/PollLoop.h b/include/utils/PollLoop.h
index c9d951f..a95fb17 100644
--- a/include/utils/PollLoop.h
+++ b/include/utils/PollLoop.h
@@ -114,8 +114,10 @@
     };
 
     Mutex mLock;
-    Condition mAwake;
     bool mPolling;
+    uint32_t mWaiters;
+    Condition mAwake;
+    Condition mResume;
 
     int mWakeReadPipeFd;
     int mWakeWritePipeFd;
diff --git a/include/utils/Vector.h b/include/utils/Vector.h
index d40ae16..ec851bd 100644
--- a/include/utils/Vector.h
+++ b/include/utils/Vector.h
@@ -115,10 +115,10 @@
 
 
     //! insert an array at a given index
-            ssize_t         insertArrayAt(const TYPE* array, size_t index, size_t numItems);
+            ssize_t         insertArrayAt(const TYPE* array, size_t index, size_t length);
 
     //! append an array at the end of this vector
-            ssize_t         appendArray(const TYPE* array, size_t numItems);
+            ssize_t         appendArray(const TYPE* array, size_t length);
 
             /*! 
              * add/insert/replace items
@@ -126,7 +126,7 @@
              
     //! insert one or several items initialized with their default constructor
     inline  ssize_t         insertAt(size_t index, size_t numItems = 1);
-    //! insert on onr several items initialized from a prototype item
+    //! insert one or several items initialized from a prototype item
             ssize_t         insertAt(const TYPE& prototype_item, size_t index, size_t numItems = 1);
     //! pop the top of the stack (removes the last element). No-op if the stack's empty
     inline  void            pop();
@@ -265,13 +265,13 @@
 }
 
 template<class TYPE> inline
-ssize_t Vector<TYPE>::insertArrayAt(const TYPE* array, size_t index, size_t numItems) {
-    return VectorImpl::insertAt(array, index, numItems);
+ssize_t Vector<TYPE>::insertArrayAt(const TYPE* array, size_t index, size_t length) {
+    return VectorImpl::insertArrayAt(array, index, length);
 }
 
 template<class TYPE> inline
-ssize_t Vector<TYPE>::appendArray(const TYPE* array, size_t numItems) {
-    return VectorImpl::add(array, numItems);
+ssize_t Vector<TYPE>::appendArray(const TYPE* array, size_t length) {
+    return VectorImpl::appendArray(array, length);
 }
 
 template<class TYPE> inline
diff --git a/include/utils/VectorImpl.h b/include/utils/VectorImpl.h
index 46a7bc2..c4ec2ff 100644
--- a/include/utils/VectorImpl.h
+++ b/include/utils/VectorImpl.h
@@ -65,9 +65,11 @@
             size_t          capacity() const;
             ssize_t         setCapacity(size_t size);
 
-            /*! append/insert another vector */
+            /*! append/insert another vector or array */
             ssize_t         insertVectorAt(const VectorImpl& vector, size_t index);
             ssize_t         appendVector(const VectorImpl& vector);
+            ssize_t         insertArrayAt(const void* array, size_t index, size_t length);
+            ssize_t         appendArray(const void* array, size_t length);
             
             /*! add/insert/replace items */
             ssize_t         insertAt(size_t where, size_t numItems = 1);
@@ -76,7 +78,7 @@
             void            push();
             void            push(const void* item);
             ssize_t         add();
-            ssize_t         add(const void* item, size_t numItems = 1);
+            ssize_t         add(const void* item);
             ssize_t         replaceAt(size_t index);
             ssize_t         replaceAt(const void* item, size_t index);
 
@@ -184,8 +186,8 @@
             void            push(const void* item);
             ssize_t         insertVectorAt(const VectorImpl& vector, size_t index);
             ssize_t         appendVector(const VectorImpl& vector);
-            ssize_t         insertArrayAt(const void* array, size_t index, size_t numItems);
-            ssize_t         appendArray(const void* array, size_t numItems);
+            ssize_t         insertArrayAt(const void* array, size_t index, size_t length);
+            ssize_t         appendArray(const void* array, size_t length);
             ssize_t         insertAt(size_t where, size_t numItems = 1);
             ssize_t         insertAt(const void* item, size_t where, size_t numItems = 1);
             ssize_t         replaceAt(size_t index);